flutter · bparrishMines · Dec 11, 2025 · Dec 11, 2025 · Dec 13, 2025
@@ -0,0 +1,19 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import UIKit
+import XCTest
+
+@testable import webview_flutter_wkwebview
+
+class ColorProxyAPITests: XCTestCase {
+  func testPigeonDefaultConstructor() {
+    let registrar = TestProxyApiRegistrar()
+    let api = registrar.apiDelegate.pigeonApiUIColor(registrar)
+
+    let instance = try? api.pigeonDelegate.pigeonDefaultConstructor(
+      pigeonApi: api, red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
+    XCTAssertNotNil(instance)
+  }
+}
@@ -17,14 +17,13 @@ class UIViewProxyAPITests: XCTestCase {
       let api = registrar.apiDelegate.pigeonApiUIView(registrar)
 
       let instance = UIView(frame: .zero)
-      let value = 0xFFF4_4336
+      let red = 0.5
+      let green = 0.5
+      let blue = 0.5
+      let alpha = 0.5
       try? api.pigeonDelegate.setBackgroundColor(
-        pigeonApi: api, pigeonInstance: instance, value: Int64(value))
-
-      let red = CGFloat(Double((value >> 16 & 0xff)) / 255.0)
-      let green = CGFloat(Double(value >> 8 & 0xff) / 255.0)
-      let blue = CGFloat(Double(value & 0xff) / 255.0)
-      let alpha = CGFloat(Double(value >> 24 & 0xff) / 255.0)
+        pigeonApi: api, pigeonInstance: instance,
+        value: UIColor(red: red, green: green, blue: blue, alpha: alpha))
 
       XCTAssertEqual(
         instance.backgroundColor, UIColor(red: red, green: green, blue: blue, alpha: alpha))

@@ -0,0 +1,18 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import Foundation
+import UIKit
+
+/// ProxyApi implementation for `UIColor`.
+///
+/// This class may handle instantiating native object instances that are attached to a Dart instance
+/// or handle method calls on the associated native class or an instance of that class.
+class ColorProxyAPIDelegate: PigeonApiDelegateUIColor {
+  func pigeonDefaultConstructor(
+    pigeonApi: PigeonApiUIColor, red: Double, green: Double, blue: Double, alpha: Double
+  ) throws -> UIColor {
+    return UIColor(red: red, green: green, blue: blue, alpha: alpha)
+  }
+}
@@ -78,9 +78,10 @@ open class ProxyAPIRegistrar: WebKitLibraryPigeonProxyApiRegistrar {
 
   /// Handles calling a Flutter method on the main thread.
   func dispatchOnMainThread(
-    execute work: @escaping (
-      _ onFailure: @escaping (_ methodName: String, _ error: PigeonError) -> Void
-    ) -> Void
+    execute work:
+      @escaping (
+        _ onFailure: @escaping (_ methodName: String, _ error: PigeonError) -> Void
+      ) -> Void
   ) {
     DispatchQueue.main.async {
       work { methodName, error in
@@ -301,4 +302,8 @@ class ProxyAPIDelegate: WebKitLibraryPigeonProxyApiDelegate {
     return PigeonApiSecCertificate(
       pigeonRegistrar: registrar, delegate: SecCertificateProxyAPIDelegate())
   }
+
+  func pigeonApiUIColor(_ registrar: WebKitLibraryPigeonProxyApiRegistrar) -> PigeonApiUIColor {
+    return PigeonApiUIColor(pigeonRegistrar: registrar, delegate: ColorProxyAPIDelegate())
+  }
 }
@@ -12,19 +12,10 @@
 /// or handle method calls on the associated native class or an instance of that class.
 class UIViewProxyAPIDelegate: PigeonApiDelegateUIView {
   #if os(iOS)
-    func setBackgroundColor(pigeonApi: PigeonApiUIView, pigeonInstance: UIView, value: Int64?)
+    func setBackgroundColor(pigeonApi: PigeonApiUIView, pigeonInstance: UIView, value: UIColor?)
       throws
     {
-      if value == nil {
-        pigeonInstance.backgroundColor = nil
-      } else {
-        let red = CGFloat(Double((value! >> 16 & 0xff)) / 255.0)
-        let green = CGFloat(Double(value! >> 8 & 0xff) / 255.0)
-        let blue = CGFloat(Double(value! & 0xff) / 255.0)
-        let alpha = CGFloat(Double(value! >> 24 & 0xff) / 255.0)
-
-        pigeonInstance.backgroundColor = UIColor(red: red, green: green, blue: blue, alpha: alpha)
-      }
+      pigeonInstance.backgroundColor = value
     }
 
     func setOpaque(pigeonApi: PigeonApiUIView, pigeonInstance: UIView, opaque: Bool) throws {

@@ -514,6 +514,9 @@ protocol WebKitLibraryPigeonProxyApiDelegate {
   /// `SecCertificate` to the Dart `InstanceManager` and make calls to Dart.
   func pigeonApiSecCertificate(_ registrar: WebKitLibraryPigeonProxyApiRegistrar)
     -> PigeonApiSecCertificate
+  /// An implementation of [PigeonApiUIColor] used to add a new Dart instance of
+  /// `UIColor` to the Dart `InstanceManager` and make calls to Dart.
+  func pigeonApiUIColor(_ registrar: WebKitLibraryPigeonProxyApiRegistrar) -> PigeonApiUIColor
 }
 
 extension WebKitLibraryPigeonProxyApiDelegate {
@@ -619,6 +622,8 @@ open class WebKitLibraryPigeonProxyApiRegistrar {
       binaryMessenger: binaryMessenger, api: apiDelegate.pigeonApiSecTrust(self))
     PigeonApiSecCertificate.setUpMessageHandlers(
       binaryMessenger: binaryMessenger, api: apiDelegate.pigeonApiSecCertificate(self))
+    PigeonApiUIColor.setUpMessageHandlers(
+      binaryMessenger: binaryMessenger, api: apiDelegate.pigeonApiUIColor(self))
   }
   func tearDown() {
     WebKitLibraryPigeonInstanceManagerApi.setUpMessageHandlers(
@@ -651,6 +656,7 @@ open class WebKitLibraryPigeonProxyApiRegistrar {
     PigeonApiWKWebpagePreferences.setUpMessageHandlers(binaryMessenger: binaryMessenger, api: nil)
     PigeonApiSecTrust.setUpMessageHandlers(binaryMessenger: binaryMessenger, api: nil)
     PigeonApiSecCertificate.setUpMessageHandlers(binaryMessenger: binaryMessenger, api: nil)
+    PigeonApiUIColor.setUpMessageHandlers(binaryMessenger: binaryMessenger, api: nil)
   }
 }
 private class WebKitLibraryPigeonInternalProxyApiCodecReaderWriter: FlutterStandardReaderWriter {
@@ -1095,6 +1101,19 @@ private class WebKitLibraryPigeonInternalProxyApiCodecReaderWriter: FlutterStand
         return
       }
 
+      #if !os(macOS)
+        if let instance = value as? UIColor {
+          pigeonRegistrar.apiDelegate.pigeonApiUIColor(pigeonRegistrar).pigeonNewInstance(
+            pigeonInstance: instance
+          ) { _ in }
+          super.writeByte(128)
+          super.writeValue(
+            pigeonRegistrar.instanceManager.identifierWithStrongReference(
+              forInstance: instance as AnyObject)!)
+          return
+        }
+      #endif
+
       if let instance = value as? NSObject {
         pigeonRegistrar.apiDelegate.pigeonApiNSObject(pigeonRegistrar).pigeonNewInstance(
           pigeonInstance: instance
@@ -2895,7 +2914,7 @@ final class PigeonApiWKWebsiteDataStore: PigeonApiProtocolWKWebsiteDataStore {
 protocol PigeonApiDelegateUIView {
   #if !os(macOS)
     /// The view’s background color.
-    func setBackgroundColor(pigeonApi: PigeonApiUIView, pigeonInstance: UIView, value: Int64?)
+    func setBackgroundColor(pigeonApi: PigeonApiUIView, pigeonInstance: UIView, value: UIColor?)
       throws
   #endif
   #if !os(macOS)
@@ -2934,7 +2953,7 @@ final class PigeonApiUIView: PigeonApiProtocolUIView {
         setBackgroundColorChannel.setMessageHandler { message, reply in
           let args = message as! [Any?]
           let pigeonInstanceArg = args[0] as! UIView
-          let valueArg: Int64? = nilOrValue(args[1])
+          let valueArg: UIColor? = nilOrValue(args[1])
           do {
             try api.pigeonDelegate.setBackgroundColor(
               pigeonApi: api, pigeonInstance: pigeonInstanceArg, value: valueArg)
@@ -7701,3 +7720,107 @@ final class PigeonApiSecCertificate: PigeonApiProtocolSecCertificate {
     }
   }
 }
+protocol PigeonApiDelegateUIColor {
+  #if !os(macOS)
+    /// Creates a color object using the specified opacity and RGB component
+    /// values.
+    ///
+    /// The colors are specified in an extended color space, and the input value
+    /// is never clamped.
+    func pigeonDefaultConstructor(
+      pigeonApi: PigeonApiUIColor, red: Double, green: Double, blue: Double, alpha: Double
+    ) throws -> UIColor
+  #endif
+}
+
+protocol PigeonApiProtocolUIColor {
+}
+
+final class PigeonApiUIColor: PigeonApiProtocolUIColor {
+  unowned let pigeonRegistrar: WebKitLibraryPigeonProxyApiRegistrar
+  let pigeonDelegate: PigeonApiDelegateUIColor
+  ///An implementation of [NSObject] used to access callback methods
+  var pigeonApiNSObject: PigeonApiNSObject {
+    return pigeonRegistrar.apiDelegate.pigeonApiNSObject(pigeonRegistrar)
+  }
+
+  init(pigeonRegistrar: WebKitLibraryPigeonProxyApiRegistrar, delegate: PigeonApiDelegateUIColor) {
+    self.pigeonRegistrar = pigeonRegistrar
+    self.pigeonDelegate = delegate
+  }
+  static func setUpMessageHandlers(binaryMessenger: FlutterBinaryMessenger, api: PigeonApiUIColor?)
+  {
+    let codec: FlutterStandardMessageCodec =
+      api != nil
+      ? FlutterStandardMessageCodec(
+        readerWriter: WebKitLibraryPigeonInternalProxyApiCodecReaderWriter(
+          pigeonRegistrar: api!.pigeonRegistrar))
+      : FlutterStandardMessageCodec.sharedInstance()
+    #if !os(macOS)
+      let pigeonDefaultConstructorChannel = FlutterBasicMessageChannel(
+        name: "dev.flutter.pigeon.webview_flutter_wkwebview.UIColor.pigeon_defaultConstructor",
+        binaryMessenger: binaryMessenger, codec: codec)
+      if let api = api {
+        pigeonDefaultConstructorChannel.setMessageHandler { message, reply in
+          let args = message as! [Any?]
+          let pigeonIdentifierArg = args[0] as! Int64
+          let redArg = args[1] as! Double
+          let greenArg = args[2] as! Double
+          let blueArg = args[3] as! Double
+          let alphaArg = args[4] as! Double
+          do {
+            api.pigeonRegistrar.instanceManager.addDartCreatedInstance(
+              try api.pigeonDelegate.pigeonDefaultConstructor(
+                pigeonApi: api, red: redArg, green: greenArg, blue: blueArg, alpha: alphaArg),
+              withIdentifier: pigeonIdentifierArg)
+            reply(wrapResult(nil))
+          } catch {
+            reply(wrapError(error))
+          }
+        }
+      } else {
+        pigeonDefaultConstructorChannel.setMessageHandler(nil)
+      }
+    #endif
+  }
+
+  #if !os(macOS)
+    ///Creates a Dart instance of UIColor and attaches it to [pigeonInstance].
+    func pigeonNewInstance(
+      pigeonInstance: UIColor, completion: @escaping (Result<Void, PigeonError>) -> Void
+    ) {
+      if pigeonRegistrar.ignoreCallsToDart {
+        completion(
+          .failure(
+            PigeonError(
+              code: "ignore-calls-error",
+              message: "Calls to Dart are being ignored.", details: "")))
+      } else if pigeonRegistrar.instanceManager.containsInstance(pigeonInstance as AnyObject) {
+        completion(.success(()))
+      } else {
+        let pigeonIdentifierArg = pigeonRegistrar.instanceManager.addHostCreatedInstance(
+          pigeonInstance as AnyObject)
+        let binaryMessenger = pigeonRegistrar.binaryMessenger
+        let codec = pigeonRegistrar.codec
+        let channelName: String =
+          "dev.flutter.pigeon.webview_flutter_wkwebview.UIColor.pigeon_newInstance"
+        let channel = FlutterBasicMessageChannel(
+          name: channelName, binaryMessenger: binaryMessenger, codec: codec)
+        channel.sendMessage([pigeonIdentifierArg] as [Any?]) { response in
+          guard let listResponse = response as? [Any?] else {
+            completion(.failure(createConnectionError(withChannelName: channelName)))
+            return
+          }
+          if listResponse.count > 1 {
+            let code: String = listResponse[0] as! String
+            let message: String? = nilOrValue(listResponse[1])
+            let details: String? = nilOrValue(listResponse[2])
+            completion(.failure(PigeonError(code: code, message: message, details: details)))
+          } else {
+            completion(.success(()))
+          }
+        }
+      }
+    }
+  #endif
+}
@@ -11,6 +11,7 @@
 		33C8DADB2E8D711500A9B7CA /* TemporaryObjCStub.m in Sources */ = {isa = PBXBuildFile; fileRef = 33C8DADA2E8D711500A9B7CA /* TemporaryObjCStub.m */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		78A318202AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage in Frameworks */ = {isa = PBXBuildFile; productRef = 78A3181F2AECB46A00862997 /* FlutterGeneratedPluginSwiftPackage */; };
+		8F0E23522EEB5D6B002AB342 /* ColorProxyAPITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8F0E23512EEB5D6B002AB342 /* ColorProxyAPITests.swift */; };
 		8F0EDFD32E1F4967001938E6 /* ProxyAPIRegistrarTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8F0EDFD22E1F4967001938E6 /* ProxyAPIRegistrarTests.swift */; };
 		8F1488E22D2DE27000191744 /* ScriptMessageHandlerProxyAPITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8F1488D02D2DE27000191744 /* ScriptMessageHandlerProxyAPITests.swift */; };
 		8F1488E32D2DE27000191744 /* TestProxyApiRegistrar.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8F1488D62D2DE27000191744 /* TestProxyApiRegistrar.swift */; };
@@ -102,6 +103,7 @@
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
 		7AFFD8ED1D35381100E5BB4D /* AppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
+		8F0E23512EEB5D6B002AB342 /* ColorProxyAPITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = ColorProxyAPITests.swift; path = ../../darwin/Tests/ColorProxyAPITests.swift; sourceTree = SOURCE_ROOT; };
 		8F0EDFD22E1F4967001938E6 /* ProxyAPIRegistrarTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = ProxyAPIRegistrarTests.swift; path = ../../darwin/Tests/ProxyAPIRegistrarTests.swift; sourceTree = SOURCE_ROOT; };
 		8F1488C52D2DE27000191744 /* ErrorProxyAPITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = ErrorProxyAPITests.swift; path = ../../darwin/Tests/ErrorProxyAPITests.swift; sourceTree = SOURCE_ROOT; };
 		8F1488C62D2DE27000191744 /* FrameInfoProxyAPITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = FrameInfoProxyAPITests.swift; path = ../../darwin/Tests/FrameInfoProxyAPITests.swift; sourceTree = SOURCE_ROOT; };
@@ -183,6 +185,7 @@
 		68BDCAEA23C3F7CB00D9C032 /* RunnerTests */ = {
 			isa = PBXGroup;
 			children = (
+				8F0E23512EEB5D6B002AB342 /* ColorProxyAPITests.swift */,
 				33C8DAD92E8D711500A9B7CA /* TemporaryObjCStub.h */,
 				33C8DADA2E8D711500A9B7CA /* TemporaryObjCStub.m */,
 				8F0EDFD22E1F4967001938E6 /* ProxyAPIRegistrarTests.swift */,
@@ -562,6 +565,7 @@
 				8F1488E22D2DE27000191744 /* ScriptMessageHandlerProxyAPITests.swift in Sources */,
 				8F1488E32D2DE27000191744 /* TestProxyApiRegistrar.swift in Sources */,
 				8F1488E42D2DE27000191744 /* URLRequestProxyAPITests.swift in Sources */,
+				8F0E23522EEB5D6B002AB342 /* ColorProxyAPITests.swift in Sources */,
 				8F1488E52D2DE27000191744 /* TestBinaryMessenger.swift in Sources */,
 				8F1488E62D2DE27000191744 /* WebViewProxyAPITests.swift in Sources */,
 				8F1488E72D2DE27000191744 /* HTTPCookieStoreProxyAPITests.swift in Sources */,

@@ -324,7 +324,7 @@ class PlatformWebView {
   }
 
   /// The view’s background color.
-  Future<void> setBackgroundColor(int? value) {
+  Future<void> setBackgroundColor(UIColor? value) {
     final WKWebView webView = nativeWebView;
     switch (webView) {
       case UIViewWKWebView():